How to clean windows streak free like a pro Click here to watch a demonstrative video ! The water/soap ratio for cleaning windows The recommended water and soap ratio for cleaning windows is : Answer : 1 gallon of distilled water with 1/2 teaspoon of concentrated dawn dish soap . Recommendation : Drop 1/2 teaspoon of concentrated dawn dish soap into an empty container, And then pour the distilled water aiming at the soap to ensure proper mixing . Using distilled water and dawn dish soap platinum The purpose of using distilled water is : Answer : to achieve the best quality appearance the windows can have Answer : to prevent chances of streaks The purpose of using dawn dish soap platinum concentrated is : Answer : Using concentrated dish soap allows a smaller dose, to aid in gliding and cleaning . Answer : Concentrated dish soap is high quality and has a longer life span. Answer : creates more foam and bubbles . Understanding why you should use distilled water The reason why you shou...